What's the difference between the process date and submission date for a flow?

The process date is the date the flow uses to retrieve records to process. As an example, the Calculate Payroll flow uses the payroll run date as the default process date to retrieve employee details and taxation information.

The submission date is the date when the process, report, or flow starts. For automatic tasks in a checklist, the task starts when the previous task completes. The application uses the system date for the submission date. If you schedule a flow, the submission date is the scheduled start date for the flow and applies to the first task in the flow.